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Proceedings Paper

Inorganic Compound Speciation By Fourier Transform Infrared (FTIR)
Author(s): R. L. Barbour; R. J. Jakobsen; W. Henry; K. Knapp
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Paper Abstract

FT-IR offers a unique method of inorganic compound speciation. Particularily in environmental samples, inorganic information has previosuly been limited to elemental or at best anion/cation information. Using FT-IR, a relatively small amount of sample (about 1 mg) can yield inorganic compound identifications. Of central importance to this technique is the availability of a good computerized reference library of pure inorganic compounds in common hydration states. This library should cover both mid- and far IR. In our laboratory, this library is being amassed using X-ray crystallography to comlement infrared results. A computer search system for the identification of inorganic compounds in mixtures has been developed which uses the above library as well as spectral knowledge of the user. Second derivative spectra are used to establish exact peak frequencies. The combination of good reference spectra and the ability to locate the exact position of overlapping bands by the use of the 2nd derivative, allows the identification of specific inorganic compounds in complex mixtures.

Paper Details

Date Published: 29 October 1981
PDF: 6 pages
Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); doi: 10.1117/12.932182
Show Author Affiliations
R. L. Barbour, Battelle-Columbus Laboratories (United States)
R. J. Jakobsen, Battelle-Columbus Laboratories (United States)
W. Henry, Battelle-Columbus Laboratories (United States)
K. Knapp, U.S. Environmental Protection Agency (United States)

Published in SPIE Proceedings Vol. 0289:
1981 Intl Conf on Fourier Transform Infrared Spectroscopy
Hajime Sakai, Editor(s)

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